Report: Google captured 51% of app downloads in Q1. Apple took 74% of the revenue.

Overall, quarterly downloads were up 11% and revenues up 9%.

FORTUNE -- Canalys on Monday issued a report on app downloads at the four major mobile stores: Google (GOOG) Play, Apple's (AAPL) App Store, Microsoft (MSFT) Windows Phone Store and Research in Motion's (BBRY) BlackBerry World.

The news was good for Google and Apple. For Microsoft and BlackBerry, not so...